Features and Benefits

  • 5.5V to 23V or 5V ±10% Input Voltage Range
  • Triple-Output Synchronous Buck Controller
  • Selectable In-Phase or 120° Out-of-Phase Operation
  • Output Voltages Adjustable from 0.6V to 0.85VIN
  • Lossless Valley-Mode Current Sensing or Accurate Valley Current Sensing Using RSENSE
  • External Compensation for Maximum Flexibility
  • Digital Soft-Start and Soft-Stop
  • Sequencing or Coincident/Ratiometric VOUT Tracking
  • Individual PGOOD Outputs
  • Active-Low RESET Output with a Programmable Timeout Period
  • 200kHz to 2.2MHz Programmable Switching Frequency
  • External Frequency Synchronization
  • Hiccup Mode Short-Circuit Protection
  • Space-Saving (7mm x 7mm) 48-Pin TQFN Package

Product Details

The MAX15003 is a triple-output, pulse-width-modulated (PWM), step-down DC-DC controller with tracking and sequencing capability. The device operates over the input voltage range of 5.5V to 23V or 5V ±10%. Each PWM controller provides an adjustable output down to 0.6V and delivers up to 15A for each output with excellent load and line regulation. The MAX15003 is optimized for high-performance, small-size power management solutions.

The options of coincident tracking, ratiometric tracking, and output sequencing allow the tailoring of the power-up/power-down sequence depending on the system requirements. Each of the MAX15003 PWM sections utilizes a voltage-mode control scheme with external compensation allowing for good noise immunity and maximum flexibility with a wide selection of inductor values and capacitor types. Each PWM section operates at the same, fixed switching frequency that is programmable from 200kHz to 2.2MHz and can be synchronized to an external clock signal using the SYNC input. Each converter operating at up to 2.2MHz with 120° out-of-phase, increases the input capacitor ripple frequency up to 6.6MHz, thereby reducing the RMS input ripple current and the size of the input bypass capacitor requirement significantly.

The MAX15003 includes internal input undervoltage lockout with hysteresis, digital soft-start/soft-stop for glitch-free power-up and power-down of each converter. The power-on reset (active-low RESET) with an adjustable timeout period monitors all three outputs and provides a active-low RESET signal to the processor when all outputs are within regulation. Protection features include lossless valley-mode current limit and hiccup mode output short-circuit protection.

The MAX15003 is available in a space-saving, 7mm x 7mm, 48-pin TQFN-EP package and is specified for operation over the -40°C to +125°C automotive temperature range. See the MAX15002 data sheet for a dual version of the MAX15003.


  • Networking/Server Power Supplies
  • PCI Express® Host Bus Adapter Power Supplies
  • Point-of-Load DC-DC Converters

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.



Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help